1042021401 has 4 divisors (see below), whose sum is σ = 1389361872. Its totient is φ = 694680932.

The previous prime is 1042021399. The next prime is 1042021429. The reversal of 1042021401 is 1041202401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1042021401 - 2¹ = 1042021399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1042021501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173670231 + ... + 173670236.

It is an arithmetic number, because the mean of its divisors is an integer number (347340468).

Almost surely, 2^1042021401 is an apocalyptic number.

It is an amenable number.

1042021401 is a deficient number, since it is larger than the sum of its proper divisors (347340471).

1042021401 is an equidigital number, since it uses as much as digits as its factorization.

1042021401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347340470.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1042021401 is about 32280.3562712681. The cubic root of 1042021401 is about 1013.8153897156.

Adding to 1042021401 its reverse (1041202401), we get a palindrome (2083223802).

The spelling of 1042021401 in words is "one billion, forty-two million, twenty-one thousand, four hundred one".